Locations & Hours

Our Locations

We operate several locations in San Francisco. Hours and contact information for each location appear below.

If you are looking to make an appointment for sexual health services, HIV testing, sexually-transmitted infection screening or PrEP, visit our Book an Appointment page.

Main Office

1035 Market Street, 4th floor
San Francisco, CA 94103


Monday – Friday, 9 am – 5 pm
Saturday & Sunday: Closed

Some groups and programs are held outside these times.

More Info


470 Castro Street
San Francisco, CA 94114


Monday: 10 am – 6 pm
Tuesday – Friday: 10 am – 8 pm
Saturday: 10 am – 6 pm
Sunday: Closed

Magnet is located at Strut on the second floor and has its own hours.

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Harm Reduction Center

117 6th Street
San Francisco, CA 94103
(between Mission St. & Minna St.)

Monday: 9 am – 7 pm
Tuesday: 9 am – 1 pm; 4 pm – 7 pm
Wednesday: 9 am – 1 pm; 4 pm – 7 pm
Thursday: 9 am – 7 pm
Friday: 9 am – 1 pm; 4 pm – 7 pm
Saturday: 4 pm – 11 pm
Sunday: Closed

More Info

Mobile Testing Unit

Get free HIV and STI tests, hormone level checks, sexual health counseling and safer sex supplies several nights a week at our mobile testing unit in neighborhoods across San Francisco.

Hours and locations vary.


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Mobile Syringe & Health Services

Our teams are out in neighborhoods across San Francisco providing safe injection and proper disposal supplies and services that help you manage your health, prevent overdose, and stop HIV and hepatitis C transmission.

Hours and locations vary.


More Info